Matsushita Electric Industrial Co., Ltd.

Hidenosuke Matsumoto

Teruhisa Takano

Hiroshi Fujieda

Kenichiro Imasu

Masao Itou

Fujio Murase

Horoshi Horii

Toshio Marumo

The timer circuit of the present invention comprises a comparator, which, in the example of the air conditioner, compares the room temperature measured by a thermistor with a predetermined value and charges the timer capacitor of the timer circuit when its output is in ON state, and makes the capacitor discharge when its output becomes in OFF state; thereby the timer circuit can produce the first set time, for example, by the abovementioned discharging time, in this first set time a compressor circuit being made OFF for prevention of overloading due to a too-early restarting, and furthermore, with utilizing the same timer circuit with a modified predetermined value of the comparator thereby producing subsequent cycles of charging and discharging and accumulating a predetermined number of repetition of the cycles, a desired longer time for the second time can be produced.

Operation time control apparatus

This invention is directed to a temperature control apparatus for an air-conditioning apparatus which does not require a manual operation in controlling the temperature of a house room relative to the outdoor temperature. The control apparatus utilizes a micro-computer having a linear function stored thereon. The control of the indoor temperature is carried out by calculating the desired indoor temperature using the linear function of outdoor temperature and controlling the air-conditioning apparatus using the desired indoor temperature.

Temperature control apparatus

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Kusatsu, Japan

Hidenosuke Matsumoto